Ƙarfe Haƙarƙari

1. Alloy bit da aka yi da m karfe;
2. Yana da juriya da tasiri mai ƙarfi, saboda kyawawan halaye masu kyau na carbide bit ana amfani dashi sosai a cikin hakar ma'adinai da ma'adinai;
3. Sai dai na ciki hexagon coal bit, mu kuma samar da PDC anga bit.

1. Ramin fashewar dutsen dutsen tricone;
2. Rashin sanyaya iska da lalatawar iskar gas;
3. Yin amfani da ma'adinan kwal da ƙarfe;
4. Muna kuma samar da tricone bit don hakar rijiyar ruwa da hako mai da iskar gas.